The theme of supernatural in Hamlet is portrayed by the ghost of the dead King Hamlet. The ghost is seen by multiple people including Horatio and the guards but it speaks only to Hamlet the prince. The ghost provides the audiences with the real motive and plot of the play which is revenge and justice. It also foreshadows Hamlet’s insanity when it warns Hamlet to no taint his mind.
Hamlet even contemplates that the ghost could be the devil trying to persuade him toward evil which is another supernatural signifier.